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Related papers: Densification of Single-Walled Carbon Nanotube Fil…

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In this work we present an ab-initio study of electronic properties of 1 dimensional (1D) core-shell nanostructures made of MS2 (MoS2, WS2) or BN armchair nanotube encapsulated carbon nanotubes (CNT). With local density approximation (LDA)…

Materials Science · Physics 2017-03-24 Amretashis Sengupta

We present a theoretical study of the directionality effects in spontaneous emission and resonance fluorescence of a quantum two-level dipole emitter near an ultrathin closely packed periodically aligned single-wall carbon nanotube film.…

Mesoscale and Nanoscale Physics · Physics 2024-10-15 Michael D. Pugh , SK Firoz Islam , Igor V. Bondarev

We present a systematic experimental investigation of the reactions between hydrogen plasma and single-walled carbon nanotubes (SWNTs) at various temperatures. Microscopy, infrared (IR) and Raman spectroscopy and electrical transport…

Materials Science · Physics 2007-05-23 Guangyu Zhang , Pengfei Qi , Xinran Wang , Yuerui Lu , David Mann , Xiaolin Li , Hongjie Dai

A simple method to disperse individual single walled carbon nanotubes (SWCNT ) on an atomically flat substrate is presented. Proper tuning of ac modes of atomic force microscopes(AFM) is discussed. This is needed to discriminate between…

Materials Science · Physics 2007-05-23 Richard Piner , Rodney S. Ruoff

A comparative study of the structural, optical and morphological properties of Cu2ZnSnS4 (CZTS) thin films prepared by two different techniques was performed. One consists of sequential evaporation of the elemental metallic precursors under…

Carbon Nanotubes (CNTs) are one of the most important materials in nanotechnology. In some of their technological applications (electromechanical oscillators and mechanical actuators for artificial muscles, for instance), it is necessary to…

Mesoscale and Nanoscale Physics · Physics 2015-10-02 Jose M. de Sousa , Pedro A. S. Autreto , Douglas S. Galvao

CdS nanotubes with wall thickness comparable to excitonic diameter of the bulk material are synthesized by a chemical route. A change in experimental conditions result in formation of nanowires, and well-separated nanoparticles. The…

Materials Science · Physics 2009-02-16 A. K. Mahapatra

We show that packed, horizontally aligned films of single-walled carbon nanotubes are hyperbolic metamaterials with ultra-subwavelength unit cells and dynamic tunability. Using Mueller-matrix ellipsometry, we characterize the films'…

We demonstrate assembly of solution processed semiconducting enriched (99%) single walled carbon nanotubes (s-SWNT) in an array with varying linear density via ac-dielectrophoresis and investigate detailed electronic transport properties of…

Mesoscale and Nanoscale Physics · Physics 2011-05-05 Biddut K. Sarker , Shashank Shekhar , Saiful I. Khondaker

We report a process to fabricate carbon nanotubes (CNT) by chemical vapor deposition at predetermined location. This process was enabled by patterning catalyst nanoparticles directly on silicon substrates with nanometer-scale precision…

Materials Science · Physics 2010-10-01 Irma Kuljanishvili , Dmitriy A. Dikin , Sergey Rozhok , Scott Mayle , Venkat Chandrasekhar

Carbon nanotube (CNT) is expected for much more important and broader applications in the future, because of its amazing electrical and mechanical properties. However, today, the prospect is detained by the fact that the growth of CNTs…

Materials Science · Physics 2007-05-23 Shuang Zhang , Takeo Hoshi , Takeo Fujiwara

Growth of carbon nanotubes (CNTs) was performed by atmospheric pressure chemical vapour deposition (APCVD) of propane on Si(111) with a pre-treated Ni overlayer acting as a catalyst. Prior to the growth of CNTs, a thin film of Ni was…

Materials Science · Physics 2019-06-04 J Sengupta , SK Panda , C Jacob

This work presents a cost-effective alternative technology for the formation of nanostructured semiconductor materials for tunable light emitting devices. CdS and ZnS semiconducting colloid nanoparticles coated with organic shell,…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Suryajaya , A. Nabok , F. Davis , A. Hassan , S. P. J. Higson , J. Evans-Freeman

Semiconducting single-wall carbon nanotubes (SWCNTs) are a promising material platform for near-infrared in-vivo imaging, optical sensing, and single-photon emission at telecommunication wavelengths. The functionalization of SWCNTs with…

Materials Science · Physics 2024-11-20 Finn L. Sebastian , Simon Settele , Han Li , Benjamin S. Flavel , Jana Zaumseil

In this study, the synthesis of multi-walled carbon nanotubes (MWCNTs) was carried out by chemical vapor deposition (CVD) using propane as the carbon source and Si as the catalyst support. The effect of CVD process variables such as…

Applied Physics · Physics 2018-08-21 Joydip Sengupta

AFM manipulation was used to controllably stretch individual metallic single-walled carbon nanotubes (SWNTs). We have found that SWNTs can sustain elongations as great as 30% without breaking. Scanned gate microscopy and transport…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 D. Bozovic , M. Bockrath , J. H. Hafner , C. M. Lieber , H. Park , M. Tinkham

Recently experiments showed that nodal structural defects are readily formed in the synthesis of single-walled carbon nanotubes (SWNTs) and consequently, SWNTs are likely to deviate from well-defined seamless tubular structures. Here, using…

Mesoscale and Nanoscale Physics · Physics 2014-10-02 Young I. Jhon , Woonjo Cho , Seok Lee , Young Min Jhon

Large-scale fully interconnected ring carbon nanotube (CNT) networks were first prepared using thermo chemical vapor deposition in nano-channel network templates of porous anodic alumina. This conductive CNT network film consists of…

Materials Science · Physics 2007-05-23 Zhi-An Ren , Jun Akimitsu

The main purpose of this paper is to evaluate the self-stress state of single-wall carbon nanotubes (CNTs) and flat graphene strips (FGSs) in their natural equilibrium state, that is, the state prior to the application of external loads. We…

Materials Science · Physics 2015-03-06 Antonino Favata , Andrea Micheletti , Paolo Podio-Guidugli , Nicola Pugno

Ability to encapsulate molecules is one of the outstanding features of nanotubes. The encapsulation alters physical and chemical properties of both nanotubes and guest species. The latter normally form a separate phase, exhibiting…

Materials Science · Physics 2014-07-23 Vitaly Chaban , Oleg Prezhdo